CTICasesSinus Venosus ASD with PAPVR
Imaging findings
CT angiography shows a superior sinus venosus atrial septal defect (ASD) and partial anomalous pulmonary venous return (PAPVR), with the right upper and middle lobe pulmonary veins draining directly into the superior vena cava (SVC). The main pulmonary artery and right heart chambers are dilated, indicating pulmonary hypertension.
Key takeaways
Sinus venosus ASD is closely associated with PAPVR of the right pulmonary veins to the SVC. This left-to-right shunt leads to right ventricular volume overload and progressive pulmonary arterial hypertension, and requires high-quality cardiac CT or MRI for surgical planning.
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